CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Accounts receivable, allowances $ 3,549 $ 3,465
Common Stock, par value (usd per share) $ 0.001 $ 0.001
Common stock, shares authorized 200,000,000 200,000,000
Common stock, shares issued 104,212,000 108,704,000
Common stock, shares outstanding 104,212,000 108,704,000